Filter or screening-machine.



PATENTED JUNE 16, 1908;

' M. LAMORT.

FILTER 0R SCREENINGMAGHINB. APPLICATION FILED MAY 3. 1907.

2 SHEETS-SHEET 1.

\NV ELN'TOR. MARCEL LAMoR-r.

No. 890,864. PATENTED JUNE 16, 1908.

. M. LAMORT. FILTER 0R SCREENING MACHINE.

APPLiOATIOH FIL'ED MAY 3, 1907.

2 BHEETS-BHEET 2.

MARQEL LAMoR-r,

BY AttoTnew rus mngms FETERS co., WASHINGTON, n. z:v

MAROEL LAMORT, OF PARIS, FRANCE.

FILTER OR SCREEN IN G-MAGHIN E.

Specification of Letters Patent.

Patented June 16, 1908.

Application filed May 3, 1907. Serial No. 371,708.

To all whom it may concern:

or filter. Fig. 7 is a detail view showing one Be it known that I, MARoEL LAMORT, a arrangement for obtaining the blast.

citizen of the French Republic, residing at 18 Rue de Mogador, Paris, France, have invented a new and useful Improvement in Filters or Screening-Machines, (for which a French patent, No. 366,807, of June 2, 1906, I

to which corresponds a patent of addition, No. 6,870, of November 5, 1906, has been obtained and I do hereby declare the following to be a full, clear, and exact description of the same.

This invention relates to a recuperating filter, particularly applicable to aper pulp, and allowing rapid and perfect filtration of the liquids charged with matters in suspension, and also the complete recovery of the latter.

The apparatus in question consists of an upper receptacle containing the liquid to be filtered which falls upon an intermittently movable endless metallic screen or gauze intended to retain the solid materials in suspension.

In accordance with this invention, the filtering cloth or gauze, charged with the ma terials to be recovered, passes first over a draining device intended to remove the drops of water retained under the cloth by capillarity, then it is moved by an intermittent advancing movement which is communicated thereto by a suitable device, said movement assuring a perfect and rapid draining owing to the true sifting action which is the result thereof; finally the gauze passes either upon a beater or, preferably, over a blower which, while having on its rear surface, detached from said cloth or gauze, the solid materials perfectly freed of liquid, which materials are finally gathered into a suitable receiver.

The accompanying drawings represent, by way of example, a machine constructed according to the invention: Figure 1 being a side elevation with some parts removed or broken away, Fig. 2 a half plan also with some parts removed, and Fig. 3 a transverse sectional elevation on the line acz Fig. 1. Figs. 4 and 5 are detailed views of operating mechanism employed. Fig. 6 is a diagram illustrating the application of an air blast for removing the solid material from the screen he same reference numerals represent similar parts in the several figures.

1 indicatesthe endless band of metallic cloth or gauze of a mesh suited to the liquid to be filtered, the band being stretched around three rollers, 2, 3, 4, movably mounted upon their axes, the rollers 3 and 4 being further mounted upon adjustable supports or bearings 5, 6, and 7, 8.

9 is the hopper or distributing reservoir,

the dimensions of which may be varied according to requirements, and which receives the liquid to be filtered which is charged with materials in suspension. The bottom of the hopper or reservoir 9, is of sheet iron erforated in order to allow the liquid to fell directly upon the gauze 1. It 1s obvious that the liquid will traverse or pass through the gauze, leaving the fibrous and mineral materials exposed upon the upper surface of the metallic tissue or cloth. As regards the liquid this is passed a second time through the gauze at the position 38, washing the latter.

An essential feature of the apparatus consists in removing the solid materials from the gauze screen and in depositing them within a suitable receptacle arranged in the lower part of the apparatus. This removal is effected according to one mode, by imparting oscillatory vibrations to the gauze by means of a beater, which removes the fibrous and other materials deposited upon the gauze, 1, and accumulates them in a rectangular box 11, placed in the lower part of the apparatus. The roller 2, is rotated very slowly, so as to cause the gauze screen 1, to travel in the direction of the arrow 40, the screen moving in such a manner as to constantly convey the solid materials towards the roller 3. At the moment that the band passes around the roller 3, the solid material is detached, owing to the beater striking the band at the point 13. The beater comprises a shaft 14, mounted in the bearings 15 and 16, and two supports 17 and 18, mounted upon the shaft 14, and fitted with two wooden laths 19, 20, which strike the band 1, at the point 13, whenlthe shaft 14, whichiis rotated y means ofjasbeltjpassesjaroundzalpulley 21,

keyed to the shaft. The solid material thus detached falls into the box or casing 11, which, when full, may be easily removed and 11, for this reason, being desired by means of screws or otherwise, and

they detach the water retained under the gauze by capillary attraction. The rotation of the roller 2, referred to above is effected by means of the devices illustrated in Fig. 4. The shaft 14 is fitted-at one of its extremities with a plate 25, upon which is fixed a crank pin 26, carried by a lever 42, secured to the plate by bolts 41 and 43, the arrangement being such that the eccentricity of the crank pin may be varied by displacing the bolt 43 in the groove or slot 27. The crank pin 26, is connected by a collar 28, and a connecting rod 29, to a leather band 30, passed around a drum 31, which is keyed upon the shaft of the roller 2. The free end of the leather band is connected through the medium of a coiled spring 32, to a screwed rod 33, adjustably mounted within a support or bracket 34, so that the tension of the spring 32, can be regulated as desired.

When the shaft 14, rotates, it communicates its movement to the plate 25, whereby the connecting rod 29, is reciprocated and the leather band 30 is tightly drawn around the drum 31, and imparts to the latter an intermittent forward movement for each turn of the shaft 14. The spring 32, returns the leather band each time that the connect ing rod returns, and without causing said band, during its returning movements, to act on the drum 31. The forward intermittent movement of the drum depends upon the adherence 0 the leather band 30, and is only assured each time that it is drawn by the connecting rod 29.

The various parts of the filter or screening machine are mounted upon two cast-iron frames 35, 36, which may be varied as desired, or which may be arranged upon a brick and cement base serving at the same time as a receptacle for the liquid after filtration, or the frames may be mounted upon cast-iron chairs. In the latter case, the arrangement comprises a'sheet iron collector between the frames 35 and 36.

In order to protect the different parts of the machine, sheet iron guards may be placed in front and upon the sides of the frames. 37, re resents a movable sheet-iron shutter, place in front of the beater in order to avoid the projection of the solid material by the beater.

on two slides 22, 23 (Fig. 3).

It is to be understood that the combination of the beater having beater plates 19, 20, and of the intermittent driving gear 30, is only indicated by way of exam le and that other mechanical devices may Ee employed to produce the oscillatory vibrations.

Instead of employing the device just re ferred to, the solid materials may be removed by means of an air blast, for instance, by means of the apparatus, illustrated diagrammatically in Figs. 6 and 7, the gauze band 1, being as before, stretched around the three rollers 2, 3 and 4, movable about their axes.

The mechanical beater which, in the above described example, struck the gauze at the point 13', as it left detached the solid materials, is replaced in the present example by the following device An air reservoir 14, is arranged at the same point 13, the reservoir having a longitudinal o )ening or slit 19, extending across the w ole width of the gauze. fed by means of a fan 20, or by any other suitable blowing apparatus, operated in any convenient manner. Itis obvious that the air escaping under a predetermined pressure through the slit 19, traverses the gauze and throws off from the latter, in the direction indicated by the arrows f, the materials deposited upon it.

The other parts of the apparatus are arranged in the identical manner above described and need no further description.

The apparatus as described may naturally receive many applications, for instance, it may be used to recover solid material as is the case when treating paper ulp where the liquid is of no value, or on t e contrary it may collect the liquid where the solid mate rial is of no value, the apparatus then acting more particularly in the manner of a filter, or finally, it may be used to recoveror collect both the liquid and the solid material.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a filtering apparatus for recovery of fibers in the manufacture of paper, an endless belt and means for imparting an intermittent advance movement thereto, means for distributing upon the upper surface of the belt liquid charged with materials to be separated and recovered, means for removing drops of water retained by capillarity on the lower surface of said belt and comprising slats 10 and 24, and means for subsequently removing the solid materials retained upon the upper surface of said belt.

2. In a filtering apparatus for recovery of fibers in the manufacture of paper, an endless belt and means for imparting an intermittent advance movement thereto, and comprising the roller 3, and where it The reservoir is a to thosea drum 31, a belt 30 frictionally engaging In testimony whereof, I have signed my said drum, a spring 32 connected With one l name to this specification in'the presence of 10 end of said belt, a rod 29 connected With the two subscribing Witnesses.

other end of said belt and a crank for recip- M ARCEL LAMORTL iocatln said rod, the Whole cooperating to 1 have the belt engage with and advance said drum When moving in one direction only and to return Without engaging said drum.

Witnesses J ULES FAYOLLET, EUGENE PIoI-IoN'. 

